Umbrella support frame



FIG. 1 is an isometric view of an umbrella support frame showing my new design with an umbrella shaft shown in broken lines to illustrate an environment of the umbrella support frame;

FIG. 2 is front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is back view thereof;

FIG. 6 is a top view thereof and shows a perimeter of a table top in broken lines to illustrate an environment of the umbrella support frame; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. Specifically, the broken lines are provided to illustrate environments in which the umbrella support frame may be used. 

CLAIM The ornamental design for an umbrella support frame, as shown and described. 